title: Syringe exchange use and HIV risk reduction over time.
authors.forename: D
authors.initials: D
authors.lastname: Paone
authors.forename: D C
authors.initials: DC
authors.lastname: Des Jarlais
authors.forename: Q
authors.initials: Q
authors.lastname: Shi
mesh_terms: D000328:Adult; D005260:Female; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission*; D006801:Humans; D008297:Male; D008875:Middle Aged; D018671:Needle-Exchange Programs; D009519:New York City; D012309:Risk-Taking; D015819:Substance Abuse, Intravenous; D013997:Time Factors